ONTAP Hardware

2240-4HA and Flash Pool


How would be the recommended setup for a 2240-4HA with 44 x 2TB SATA and 4 x 200GB SSD?

I'm thinking:

Controller 1 with the Flash pool 3 disks RAID DP and 1 spare and 40 2TB SATA plus 1 spare

Controller 2 with 3 disks either Raid 4 plus 1 spare or Raid DP and no spare

Is there a better way of doing this?



It really depends on your business needs.  What you seem to be leaning to is leaving one controller pretty much as a backup, which is fine if that's what you want to do.  My only comment is that on controller 2, you can't not have a spare; Ontap won't like it, so go with the 2-disk raid 4 aggregate and one spare.

TR4070, Flash Pool Design and Implementation Guide, is interesting reading and you can get it from the support site.